Engineering PCs
Computer-aided design projects often range from simple 2D drawings to graphics-intensive engineering applications. Computationally intensive number crunching in 3D surface and solid modeling, photorealistic rendering, and FEA applications demand a great deal from a PC. Careful selection of a PC for these applications requires an examination of the capabilities of the CPU, RAM capacity, disk space, operating system, network features, and graphics capabilities. The industry advances quickly, especially in microprocessor capabilities. The following PC configurations list minimum requirements for various CAD applications. It should be noted that because of rapid advances in the industry, this listing may be dated by the time of publication.
For 2D drafting applications, a low-end PC is sufficient. This denotes a PC equipped with a Pentium II-266 MHz (or equivalent) processor running with 32 MB of RAM and Windows 95, 98, NT, or XP. A 4-GB hard drive is suggested by most software manufacturers, even though the software may only use 300 MB for the root program. A 16-inch highresolution (1024 768) SVGA should also be considered a minimum requirement. CDROM drives are also essential.
For 3D modeling and FEA applications, a Pentium III 800-MHz processor running on a Windows XP or Windows 2000 operating system works well. The minimum memory requirement for Windows NT is 32 MB, and the operating system requires 160 MB of harddrive space. However, most graphics programs will require at least 256 MB of RAM to run. The monitor for these applications should be 21 in. with 0.25 ultrafine dot pitch, high resolution (1600 1280), and 65,536 colors. Peripheral component interconnect (PCI) local
bus (a high-bandwidth, processor-independent bus) and a minimum 4-GB hard drive are also required.
Emory W. Zimmers, Jr. and Technical Staff
Enterprise Systems Center
Lehigh University
Bethlehem, Pennsylvania
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